EP 0313650 A4 19910522 - MICROWAVE ABSORBER ATTENUATOR FOR LINEAR SSPA POWER CONTROL
Title (en)
MICROWAVE ABSORBER ATTENUATOR FOR LINEAR SSPA POWER CONTROL
Publication
Application
Priority
- US 8801311 W 19880419
- US 4541487 A 19870504
Abstract (en)
[origin: WO8809064A1] The nonlinearity of the frequency response of a solid state power amplifier (SSPA, 13) is obviated by effectively operating the SSPA at the ldB compression point, where the nonlinearity does not exist, and controllably reducing, downstream of the SSPA, the power output produced by the SSPA to the level required by the link. In particular, the output is reduced by controllably inserting (24) a relatively thin tapered blade of ferrite material into a waveguide coupling section (14) downstream of the SSPA. Preferably the ferrite material is comprised of a robust carbonyl steel of sufficient thickness to withstand the heat induced in the course of its absorbing microwave energy at the SSPA output, while being of a narrow or thin configuration and oriented for insertion into the absorbing section of waveguide so as to not effectively alter the characteristics of the signal profile of the electromagnetic wave.
IPC 1-7
H01P 1/22; H03F 1/32; H03F 3/21; H03F 3/60; H03G 11/04; H04B 7/185
IPC 8 full level
H01P 1/22 (2006.01); H03G 3/20 (2006.01); H04B 7/155 (2006.01)
CPC (source: EP)
H01P 1/222 (2013.01); H03G 3/3042 (2013.01)
Citation (search report)
See references of WO 8809064A1
Designated contracting state (EPC)
BE DE FR GB IT NL SE
DOCDB simple family (publication)
WO 8809064 A1 19881117; AU 1938688 A 19881206; AU 599254 B2 19900712; CA 1289207 C 19910917; DE 3853041 D1 19950323; DE 3853041 T2 19950608; DE 3855642 D1 19961205; DE 3855642 T2 19970227; EP 0313650 A1 19890503; EP 0313650 A4 19910522; EP 0313650 B1 19950215; EP 0578337 A1 19940112; EP 0578337 B1 19961030; ES 2013653 A6 19900516; JP H01503348 A 19891109
DOCDB simple family (application)
US 8801311 W 19880419; AU 1938688 A 19880419; CA 565828 A 19880503; DE 3853041 T 19880419; DE 3855642 T 19880419; EP 88905262 A 19880419; EP 93202604 A 19880419; ES 8801363 A 19880504; JP 50489788 A 19880419